Cutting-off machine.



G. GORTON.

CUTTING-OFF MACHINE.

APPLIOATION FILED MAY'I,1912.

Patented Sept. 23, 1913.

5 SHBETS-SHEET 1.

G. GORTON.

CUTTING-OFF MACHINE.

APPLICATION FILED MAY 7, 1912.

1,073,600. Patented Sept. 23, 1913.

5 SHEETS-SHEET Z.

G. G0RT0N.. CUTTING-OFF MACHINE.

APPLIOATION FILED MAY 7, 1912.

1,073,600, Patented Sept. 23, 1913.

5 BKEBTS'BHEBT 3 WWW) /9 K) x7 2 u 35% W w COLUMIHA I'LANQGRAI'IIC(1.,WASH|NUTON, u. c.

G. GORTON.

CUTTING-OFF MACHINE.

APPLICATION FILED MAY 7, 1912.

1,073,600, Patented Sept; 23, 1913.-

5 BHBBTSSHEET 4.

6. awwe/wto'a M MW GEORGE GORTON, OF RACINE, WISCONSIN.

CUTTING-OFF MACHINE.

Specification of Letters Patent.

latt-anted Sept. 23, 1913.

Application filed. May 7, 1912. Serial No. 695,794.

To all w/wm it may concern.

Be it known that I, Gnonon GORTON, a citizen of the United States,residing at Racine, in the county of Racine and State of \Visconsin,have invented certain new and useful Ilmprm'ements in and Relating tohittingtllf Machines, of which the following is a specification.

This inv :ntion relates to certain improvements in metal cutting offmachines; and the objects and nature of the invention will be readilyunderstood by those skilled in the art in the light of the follmvingexplanation of the accompanying drawing illustrating what I now believeto be the preferred embodiment from among other formations,arrangements, constructions and combinations within the spirit and scopeof my in vention.

An object of the invention is to provide improvements in construction ofthe cutter disk carrying drum and the mountings thereof or bearingstherefor with the ends in view of attaining maximum durability,compactness, and quick, easy and accurate bearing adjustment.

A further object of the invention is to provide improvements in andrelating to means employed for mounting and driving hollow rotary drumsprovided with and spanned by cutter disks having central work receivingopenings with the ends in view of reducing the length of such drums,improving the bearings thereof, attaining maximum lubrication andconsequent durability, and at taining accuracy in adjustment.

A further object of the invention is to provide certain improvements inarrangements of parts and in details of construction, whereby a highlyefficient and improved cutting off machine cutting element and mountingtherefor will be produced.

The invention consists in certain novel features of construction and incombinations and arrangements as more fully and particularly set forth.and pointed out hereinafter.

Referring to the accompanying drawingsz-Figure 1, is a front elevationof a portion of a cutting off machine, showing the cutter disk, and thebox or case carrying the drum to which said disk is secured and by whichthe same is driven; the pinion shaft being shown in section, the baseand means for mounting or supporting said. ease or box on or in the baseand tire actuatv ingor operating tl'tlllSlIliSSlOll gearing and variousother parts, not being shown. Fig. 52, is a rear elevation of thestructure of Fig. 1. Fig. 3, is a section on the line 33, Fig. 1. Fig.4, is a section on the line 44t,

Fig. 1. Fig. 5, a section on the line 5-5, 1. 1g. 1. l 1g. (3, IS asection on the line 6t3, ii lg. i. Fig. 7, 1s a sectlonal view showmg adifferent bearing adjustment. Figs. 8, 8, t), it), 11, 1.2, and 13, aresectional views through the box and drum, showing variously formedbearings and adjustments. Fig. 141-, is a side elevation of the portionof a case or box receiving the pinion shaft, the arrangement beingsomewhat different from that of Fig. 1.

In the drawings, I show an annular or ring-like case or box in which thehollow rotary drum 1, is mounted and by which it is supported. Thecutter disk 2, is secured to one end of this drum and is driven by andspans the drum, and is provided with a central work receiving opening20, surrounded by suitable cutters 2'1, diagrammatically indirated inthe drawings. The drum is pro vided with an enlarged exterior drivinggear 10, rigid with the drum and inclosed within said case, and moshingwith and driven by a pinion 3, inclosed within the ease and driven by apinion shaft 30, mounted in the edge portion of the case beyond the gear10, and usually extending transversely through the case. Suitable means,not shown, are provided for driving said pinion shaft.

In a cutting oil machine, the case carrying the drum 1, usuallyconstitutes a feed carriage, provided with suitable feed works ormechanism, and suitably mounted in or on a suitable tixed base providedwith one or more work or stock clamps or viscs to hold the stockextending through the work receiving opening of the cutter disk, whilethe rotary disk operates thereon to sever the same as the carriage ismoved in the base on its feed stroke. The case carrying said drum can beeither fixed to the base, or mounted therein or thereon to swing or toreciprocate on the feed and return strokes. If the case is fixed, meanswill be provided to feed the work or stock being severed, and if thecase is movable to constitute a feed carriage, the stock or work will beheld fixed.

I do not herein show the base, feed mech' anism, stock clamp or otherholder, 0perating gearing, and means for mounting on nected with thedrum by a suitable web ar ranged at a point approximately midway betweenthe ends of the drum. The driving gear composed of the web, rim andteeth is not necessarily located at the center of the length of the drumbut is preferably spaced from both the front and rear ends of the drumto leave exterior cylindrical or peripheral portions of the drum oeyondopposite side faces of said gear.

In the form illustrated by Figs. 1 to 6, the vertical front end edge ofthe drum is formed with a depressed seat to receive the surrounding edgeportion of the cutter disk 2, and this disk is removably clamped to thedrum end by a clamping ring 22, removably fitting the front verticalface of the disk, and secured by removable machine screws 23, passingthrough the ring and disk and longitudinally into the drum. This ring,beyond the front end of the drum, is formed at its rear face with asurrounding liquid (water) receiving groove 24, and in front of saidgroove, with an annular projecting free liquid (water) slinging edge 25.

If so desired, and as shown in certain other figures of the drawings,the clamping ring 22 need not be employed, but the cutter disk 2 can beremovably secured by the screws 23, and the surrounding edge of the diskitself can be extended beyond the external diameter of the drum andbeveled or sharp ened or annularly grooved to form the projecting freewater or other liquid slinging edge 25, in front of the front end orface of the case or box as shown in Figs. 8, 8 9 and 10.

The rear end of the drum in rear of the rear face of the box or case isalso provided with. an exterior circumferential water or liquid annulargroove and slinging edge 26. During the operation of the cutter disk,the cutters and the kerf in the work are flooded with suitable coolingliquid, such as soda water or the like, and this water is dischargedfrom the disk and also runs through the drum and is discharged from therear end thereof. It is exceedingly desirable in the operation of suchcutting off machines, to be able to control the discharge of this liquidand prevent the same from working into the box or case and to the drumbearings. Hence the provision of the water receiving and slinginggrooves and edges at the front and rear ends of the drum projectingbeyond the portions of the case circumferentially fitting the drum.

These grooves and edges collect the water and prevent the same workinginto the case, and cause the rapid centrifugal discharge of the sameradially from the drum ends.

The front and rear ends of the case or box are extended forwardly andrearwardly beyond the portions thereof fitting the circumference of thedrum, and the central openings thereof are preferably internallyenlarged in diameter so that the inner walls of said box ends are spacedfrom and overhang the water receiving and slinging grooves and edges ofthe drum ends, to form annular recesses 28, to catch and receive thewater thrown radially from said edges.

These water catching recesses 28, are usually open at their lowerportions to permit the water caught in said grooves or recesses to flow,or drop from the lower side of the case (see Figs. 1, 2, 8 and 4:) intoany suitable 01f take or receptacle, not shown. The box or casecircumferentially fits around the exterior surface of the drum betweenthe driving gear and the opposite end portions-of the drum, and the drumis externally formed to cooperate with a peculiar internal formation ofthe case in retaining lubricating oil within the case and againstleakage to the water slinging grooves 24, 26.

I show the drum exteriorly formed with circumferential parallel oilcollecting and slinging grooves 11, while the case is formed withradially deep oil chambers, grooves or annular recesses 12, surroundingsaid grooves 11, so that the oil is thrown radially or centrifugallyfrom the grooves 11, into said annular recesses 12. The portions of thecase between the annular oil chambers 12, form annular inwardlyextending ribs or flanges 13, at their inner edges fitting thecylindrical faces of the drum intervening between the grooves 11, andforming running joints in connection therewith against leakage of oilfrom the case and against leakage of the soda water or other coolingliquid into the case, as the film of oil which will form on each rib orflange 13, very effectively prevents water entering the oil chambers. VV

The box or case is composed of two vertical parallel annular or ringlike sections M, 15, fitting together at the inner side faces of theirouter circumferential portions and rigidly secured to form the completebox or case by bolts or screws 16.

In the specific example illustrated, typified, by Fig. 1, the section14c, surrounds the end of the drum in front of the drive gear while thesection 15, surrounds the drum in rear of the drive gear, while theouter portions of the box sections of greater diameter than the drivegear meet around and are spaced radially or a distance outwardly fromthe drive gear to form an annular chamber 17, in which said gearrevolves and this chamber forms an oil receptacle so that the gearrevolves in oil at least throughout a portion of its circle. Theadjoining inner vertical faces of the two box sections 1-1, 15, arepreferably so formed as not to contact with the opposite vertical sidefaces of the driving gear web and hence provide oil chambers or recesses12, such as hereinbefore described beside said vertical faces of thegear web.

The box or case supports and carries the drum and forms the journal boxthereof or provides a bearing therefor, however the real bearing for thedrum is not around the cylindrical portion thereof but is noncylindricaland is provided between side faces of the drive gear and correspondingannular internal portions of the box of greater diameter than thecylindrical faces of the box surrounding the circumferential portions ofthe drum.

In the specific example typified by Fig. 1, I show what might be termedcone bearings between opposite side faces of the driving gear and thebox sections 14, 15. F or instance, the rim of the driving gear isformed with corresponding opposite side face inclined or conicalinwardly converging annular bearing faces 18, extending from thelongitudinally enlarged or widened outer toothed or circumferential faceof the rim inwardly to the web joining the rim to the drum so that thebearin faces 18, are spaced radially a distance from the cylindri :alportion of the drum.

The box is internally formed with correspondingly formed inclined orconical annular bearing faces to receive said faces 18, and said bearingfaces of the box are arranged within or are surrounded by the oilchamber 17, of the case in which the toothed rim of the gear revolves.

I show the box section 15, formed with rigid conical or inclined annularbearing surface 19, to receive the rear surface 18, of the gear, Whilethe inner side face of the box section l t, is annularly recessed toreceive av laterally adjustable bearing ring 4:, having its inner sideface beveled to form an annular inclined or conical bearing surface 40,receiving and corresponding to the front bearing surface 18, of thegear.

The ring it, is adjustable in a direction parallel with the axis ofrotation of the drum to take up wear of the bearing faces 4t0, 1S and19, and to tighten the bearing to the desired degree, and incidentallysuch adjustment of the bearing properly centers the drum in the box.Various means can be provided for adjusting the bearing ring andmaintaining the same in the desired adjust ment with the conical bearingsurface 10, thereof absolutely concentric or parallel with the engagingsurface 18, of the drum gear, For instance, adjusting screws ll,

can be provided passing loosely through and turnablc in the box section14:, and screwing into transverse threaded sockets in the bearing ring4, so that the ring can be moved toward or from bearing surface 18, byrotating the screws in the proper direction. These screws have theirheads suitably formed to receive the proper tool for turning the sameand these heads can be cormtersunl; if so desired.

in connection with the adjusting screws t1, i usually provide headlessset or stopforming screws tiscrewing through threaded holes in the boxsection and at. their inner ends abutting against the outer verticalside face of the ring. The adjusting screws 41, are spaced apart andarranged in a circle about the ring and usually each adjusting screw hasa stop screw l2, arranged adjacent thereto.

In adjusting the ring, the adjusting screws 41, are loosened up, and theset screws 12, are then tightened up uniformly about the ring, andfinally the adjusting screws are tightened to pull the ring tightlyagainst the set screws -12. and set the same in the desired accuratevertical position and allowing the necessary accurate looseness of or inthe bearing.

instead of providing the screws 4-1, il-2, :[or bodily and uniformlyadjusting the bearing ring horizontally or parallel with the drum axis.various other adjusting means might be employed. For instance, in Fig.7. I show a construction wherein the vertical horizontally-slidal)lebearing ring L, is hacked and adjusted by a nut-forming ring -13,exteriorly threaded to mesh with the correspomlingly threaded wall at,of an annular socket in the box section H. Itotation of this nut in onedirection will force the bearing ring toward the drum bearing 18. whilerotation in the opposite direction will permit, bearing looseningmovement of the. bearing ring.

As a means for rotating this nut and holding the same in the desiredposition, I show a rotary shaft l7) mounted in the box section and atits inner end provided with a pinion etti, meshing with teeth l7, formedaround the inner surface of the nut 43. The outer end 48 of this shaftis arranged at the exterior of the box and is forn'led to receive and berotated by a wrench or other implement.

The exterior portion of the shaft. can be provided with a. longitudinalthread on which a jam nut 49, is located. The shaft can be lockedagainst movement by tightening up this nut against the outer surface ofthe box.

In the example typified by the construc tion of Fig. 1, the box sections14-, 15, are formed at their edge portions beyond the circle of the gearteeth of the drum driving gear, with alined transverse openings toreceive the pinion shaft bearings, and said box sections ii somewhatenlarged adjacent to said shaft to receive said bearings. in saidexample the pinion shaft is mounted in sleeves or bushings 5, insertedand fixed in said openings and spaced apart at their inner ends toreceive the pinion 3, and the drum gear teeth between their end edges.These bushings are preferably formed at their inner faces with suitableoil grooves for distribution of oil to the pinion shaft. Each bushing isshown provided with a longitudinal oil return duct or passage 50, froman annular oil groove :31, around and open to the shaft at the outer endof the bearin The inner end of the duct 50, opens radially at the lowerportion of the exterior of the bushing to discharge the oil onto the rimof the drum driving gear beyond the end edges of the teeth and adjacentto the outer edge of one of the bearing faces 18.

At the top portions of their inner ends, the two bushings 5, are shownprovided with oil pockets 52, at their inner ends open to the pinionshaft bearing and at their upper ends open to catch oil carried up bythe pinion and overflowing from the ends thereof.

The drum gear moves in oil through a considerable portion of the circleof its travel and conseguently carries a considerable quantity of oil upto the pinion and much of this oil is carried around with the pinion andoverflows therefrom and is caught in the pockets F 2, and delivered tothe pinion shaft bearings. The surplus oil from the pinion bearings isdelivered back to the drum bearings described. The drum bearings at thefaces of the drum driving gear are plentifully lubricated by the oil inthe box, in fact the bearings at the lower portion of the gear areconstantly immersed in oil.

My invention can be embodied in many forms of bearings. For instance, in8, I show the annular web 6, (through and by which the drum 66 is dri enby gear teeth 61, pinion 62, and its shaft 63,) formed at one side facewith an annular vertical fiat bearing face 6%, and on the other sidewith an annular t -groove forming two out-- Wardly diverging conicalbearing faces The box section l i, is formed at its inner side face withan annular rib t -shaped in cross section to lit in said i -groove andpro vide converging conical flat bearing faces 66, for the facesAdjustment is pro vided for by a flat adjustable bearing ring 67,carried by the other box section 15, and held and adjusted by adjustingand set screws 41, 4:2, and providing a flat vertical annular bearingface to engage the rotating surface 6st. The conical bearing surfaces65, and 66, center the drum and receive the radial thrust and constantlymaintain the desired unifiorm engagement completely around the circle ofthe bearing even after repeated adjustment due to wear. The de siredadjustment of the bearing can bemaintained by the ring 67, and itsadjusting means.

Free and bountiful lubrication can be easily provided for by reason ofthe inclosure of the drum and its gear in the oil containing receptacleso that oil is carried around by the gear, and the location of the mainbearing of the drum near the periphery of the drum driving gear.

I show the ring 6'1", formed with open top oil pockets 67, to catch oildropped from the gear rim and having one or more lateral oil ducts 67,to the bearing surface 64. Oil pockets and ducts 65, can be providedleading to the surfaces 65, 66. These pockets are spaced around the gearand pick up and carry around oil and pass the same to the main bearing.

It is obvious that the arrangement of Fig. 8, might be reversed byforming the drum gear web with the rib providing surfaces 66, and the besections with the V-groove providing the surfaces In Fig. 9, the gearweb 6, is shownat its opposite side faces formed vvitl'iillanges attheir outer surfaces providing diverging or I opprsite conical annularbearing faces 60. The box is provided with opposing bearing faces 61,62, between th Mine and the tooth rim 63, of the drum driving gear. Theannular conical surface 61, is formed by a rigid flange of the boxsection 14, while the surface 62, is formed on an adjustable bearingring 6st, carried by the other boX sec tion 15". This formation andarrangement will be readily understood by those skilled n the art, inthe light of what has preceded herein.

In the form illustrated by Fig. 10, the main bearing for the drum isformed by two conical annular bearing surfaces 60, 61, arranged at oneside of the drum driving gear web, while adjustment is provided for byan adjustable bearing ring 6%, at the opposite side of said ring havinga vertical bearing'face 64, engaging a flat vertical face 61, of theweb. The formation on the left hand side of the web is the same as thaton the left hand side of the web of Fi a in F 11, tae main bearing forthe drum is arrangeo on one side of the drum driving gear web andcomprises an adjustable bearing ring 64:, beveled to form'an inwardlyand laterally inclined or conical annular bearing face 6 surrounding andening the inclined or conical bearing face 6%, of a lateral flange Garigid with the gear web. The opposite side of the gear web is formedwith a flat vertical bearing face 64?, engaging the flat vertical faceGil of a rib 64%, formed integral with the adjacent wall of the box.

The construction illustrated by Fig. 1.2, is practically that disclosedby Fig. it, with the exception that the conical bcariir -ace I), of theadjustable bearing ring a, is virtually within or surrounded by theconical bearing face 0, of the drum driving gear web.

In the construction illustrated by .i ig. 13, double main bearings areprovided on both sides of the drum driving gear web. The gear Web isprovided at both side faces with similar annular ribs 7, V-shaped incross section to provide each rib with opposite or inner and outerconverging annular conical bearing surfaces 7, and the adjacent sidewalls of the box are provided with corresponding ai'inular V grooves toreceive these ribs, each groove providing annular converging conicalbearing faces 7" engaging the surfaces 7. The groove and bearing faces 7at one side of the gear web are formed in and by the adjacent casingwall, while the surfaces 7", at the opposite side of the web are formedin the inner end of an adjustable bearing ring 70, provided with anysuitable adjusting means, such as hereinbefore dcscribed.

Fig. 14, shows in elevation a portion of the case of the structureillustrated by Fig. 8, wherein the box sections have a transversepassage open at the top to receive a tube 8, clamped to both sections ofthe box by a cap 80, secured by bolts 8.1.. This tube 8, contains thebushings 82, forming bearings for the pinion shaft 63, and incloses thepinion 62. The tube 82, is cut away at its under side to receive thegear teeth (ii of the drum driving gear and permit intermeshing thereofwith the driving pinion.

l Vhile peculiar advantages are attained by forming the drum in onepiece with its enlarged exterior driving gear, yet I do not wish tolimit my iiivention to such formation, and while the provision of themain bearings for the drum located at one or both side faces of the drumdriving gear is an important, if not the important object of thisinvention, yet I do not wish to limit all features of the inventionthereto, as certain features of the invention are applicable where otherforms of bearings are employed.

By arranging the main bearings for the drum elsewhere than about thecylindrical exterior thereof, I am enabled to make the drum of a minimumlength and hence to duce the width of the complete machine, also I amthereby enabled to locate the work or stock clamps or Vises nearer tothe side faces of the cutting disk than has heretofore been possible. Ialso avoid the necessity of employing expensive bearings heretoforenecessary to receive the cylindrical portions of the drum, and can castthe box sections and also the drum and its driving gear and produce anexceedingly durable and yet comparatively inexpensive structure. Bytilipltiy'llig the cone-like main bearings for the drum, bearingadjustment can be quickly and accurately aecom ilished and the annularbearing surfaces can be maintained in accurate engagement and alinemcntthroughout the circles thereof, a result not possible of accomplishmentwhere split journal boxes and cylindrical bearings are employed.

By locating the main bearings for the drum approximately as shownperfect lubrication can be attained, with resulting durability.

it is evident that various changes, variations, and modifications mightbe resorted to without departing from the spirit and scope of myinvention as delined by the claims and hence I. do not wish to limitmyself to the exact disclosures hereof.

l. A. cutting-oil machine head comprising an annular box forming an oilreceptacle and composed of ring-like transverse sections reinovabl ysecured together with their inner side faces adjoining, and a rotaryhollow drum provided will and driving an internal cutter disk, said drumrotating in and carried by said box and extending longitudinallytllercthrough aml formed with an enlarged exterior driving gear inclosedby said box and traveling through said receptacle.

Q. A cutting-oil machine head comprising an, annular hollow box composedof transverse annular sections removably secured togcthcr side by side,and a hollow rotary cutter disk drum mounted in and extending centrallythrough said box and provided with exterior driven means.

3. A. cutting-oil machine head comprising a hollow annular box, and ahollow rotary cutter disk drum mounted therein and having cylindricalcircuinferential portions and an exterior driving gear between saidcylindrical portions and inclosed by said box, said box having end wallsaround said cylindrical ptn'tions of said drum, said box and drumproviding main drum bearings of greater diameter than. and removed fromsaid cylindrical portions.

4-. A. cutting-01f machine head con'iprising an annular hollow boxproviding main bearings for the cutter disk drum, and a hollow rotarycutter disk drum extending through and mounted in said box andPI'O'v'ltlOtl with driving means, said drum having circumferential.cylindrical end portions formed with series of annular oil collectingand slinging grooves.

5. A cutting oil machine head comprising a hollow annular box, and arotary hollow cutter-disk drum having a cutter disk secured thereto andspanning the same, said drum extending through and rotating in said boxand formed intermediate its ends with an exterior driving gear, said boxproviding main bearings for said drum, the opposite end portions of saiddrum beyond said having exterior cylindrical surfaces and interveningoil collecting and slinging grooves, said box providing cylindricaledges receiving said surfaces of the drum to form oil-retaining andwater-excluding running joints interposed between the main bearings andthe outer end edges of the drum, said box also providing annular oil.collecting chambers around said slinging grooves and interposed betweensaid cylindrical edges.

6, 91 cutting-off machine head comprising a hollow annular box composedof transverse annular sections fitting together at their outer edgeportions, bolts passing through said edge portions and removablysecuring the sections together, a rotary 1101 low cutter disk drumextending through and mounted in said box and having an exterior drivinggear arranged between said sections and inclosed within said box, adriving pinion for said gear arranged in said box and provided withdriving shaft, said box forming oil chambers around said drum atopposite side faces of said gear and fitting the drum to form runningjoints therewith, said box forming the main bearing for the drum betweenthe box and said gear.

7 A cutting-off machine head comprising a hollow annular box, and arotary hollow cutter disk drum mounted therein and formed intermediateits length with an annular radially projecting portion, the main bearingfor the drum being arranged between the box and said radially projectingportion, said drum being provided with driving means.

8. A cutting-off machine head comprising a box, and a rotary hollowcutter disk drum mounted therein and extending therethrough and havingcircumferential cylindrical portions surrounded by said box and anexterior driving gear between said cylindrical portions and arranged.within the box and havin annular side bearing faces, said box providingannular side bearing faces to codperate with said bearing faces of thegear to form the main bearing for the drum. 9. A cutting-off machinehead comprising an annular hollow box, and a hollow rotary drumextending therethrough and mounted therein and provided with drivingmeans within the box, said drum hav ing an annular conical bearingsurface, and said box providing drum bearing surfaces, one of saidsurfaces of the box termed by an adjustable bearing ring.

10. A cutting'olf machine head comprising a hollow annular box formingan oil receptacle, and a rotary hollow cutter disk drum mounted in saidbox and provided with an exterior driving gear inclosed in the box andtraveling through said receptacle and provided with annular side hearingsurfaces, said box provided with corresponding side bearing surfaces tocooperate with said surfaces of the gear and form the main bearing forthe drum.

11. A cutting-oil machine head comprising a hollow annular box, and arotary hollow cutter disk drum mounted therein and having cylindrical.circumferential portions circumferentially engaged by the walls of saidbox, said walls of the box forming annular oil chambers open to andaround said portions of the drum, said drum provided with an exteriorperipherally toothed driving gear, inclosed by said box and providedwith side bearing surfaces, said box provided with corresponding sidebearing faces coiiperating with said surfaces of the gear to form themain hearing of the drum, one of said faces of the box being formed by abearing ring adjustable bodily in the box in a direction parallel to theaxis of the drum.

12. A cutting-cit machine head comprising an annular hollow box, and ahollow rotary cutter disk drum extending through and mounted in said boxand provided with driving gearing inclosed within the'box, said box anddrum provided with conical annular bearing surfaces forming the mainbearing for the drum, one of said surfaces being formed by a bearingring bodily adjustable in the box in a direction parallel to the axis ofrotation of the drum'and provided with adjusting means accessible at theexterior of the box.

13. A cutting-off machine head comprising an annular hollow box, and arotary liollo-w cutter disk drum mounted in thebox and havingcylindrical circumferential portions surrounded by and fitting the endwalls of the box, said box walls forming annular oil chambers aroundsaid portions of the drum and running joints to retain the oil in saidchambers, said drum provided with an exterior driving gear of enlargeddiameter with respect to said cylindrical portions of the drum, said boxforming an oil receptacle through which said gear travels and inclosingsaid gear, the main bear? for the drum being of enlarged diameter withrespect to said cylindrical portions being formed by engaging side facesof the gear and box.

A cutting-oil machine head comprising an anular hollow box composed ofringline transverse sections secured together with their inner sidefaces adjoining and forming an annular chamber between said inner sidefaces at its lower portion constituting an oil receptacle, and a rotary1101-:

low cutter disk drum mounted in and extending through said box andhaving circnmferential cylindrical portions titted within and surroumledby the end walls of said box sections and provided with an intermediateexterior driving gear arranged between the inner side faces of said boxsections and located in said annular chamber, and provided with adriving pinion arranged in said annular chamber and mounted in andcarried by said box sections.

15. A cutting-otf machine head comprising an annular hollow box composedof ring-like transverse sections secured together with their inner sidefaces adjoining and forming an annular chamber between said inner sidefaces at its lower portion constituting an oil receptacle, and a rotaryhollow cutter disk drum mounted in and extending through said box andhaving circumferential cylindrical portions fitted within and surroundedby the end walls of said box sections and provided with an intermediateexterior driving gear arranged between the inner side faccs of said boxsections and located in said annular chamber, said inner side faces ofthe box sections having annular bearing surfaces engaging correspondingannular side surfaces of said gear, certain of said surfaces beingconical to form the main bearing for the drum and to center the drumwithin the box.

16. A cutting-off machine head comprising a hollow box forming aninternal annular chamber, and a rotary hollow cutter disk drum mountedin said box and provided with an exterior annular portion extending intosaid chamber and inclosed within the box and provided with side bearingsurfaces, said box internally provided with corresponding side bearingsurfaces engaging said surfaces of said annular portion, certain of saidsurfaces being conical to center the drum within the box, one of saidsurfaces of the box being formed by a bearing ring adjustablelongitudinally within the box in a direction parallel with the axis ofrotation of the drum and provided with adjusting means.

17. A cutting-off machine head comprising an annular box forn'iing aninternal annular chamber adapted to contain oil, and a hollow rotarycutter disk drum mounted in and extending through the box and providedintermediate its ends with an exterior driving gear inclosed by the boxand ar ranged in said chamber, the box and gear providing annularopposite side bearing surfaces forming the main bearing for the drum andopen for flow of oil thereto from said chamber and from the rim of thegear, certain of said bearing surfaces being conical and concentricallyarranged one within the other, said bearing surfaces comprising abearing ring bodily adjustable within the box in a direction parallel tothe axis of rotation of the drum.

to. A cutting-elf machine head comprising an annular hollow box, ahollow rotary cutter disk drum mounted therein, said drum provided withan exterior driving gear within the box and having side bearing facesengaging corres 'mnding surfaces within the box, one of said bearingfaces being conical, bearing bushings extending into the outer portionof the box, a pinion shaft mounted in said bushings, a pinion driven bysaid shaft and arranged in the box and n'lcshing with said gear.

1!). A cuttingotl' machine head compris ing an annular hollow boxforming an intcrnal annular chamber adapted to contain oil, a hollowrotary cutter disk drum mounted in the box and provided with an exteriordriving gear inclosed in the box and located in said chamber, a pinionshaft extending through said chamber and the outer portion of the boxand provided with a pinion in said chamber and meshing with said gear,and bearings for said pinion shaft having pockets to receive oil carriedup by said pinion and passages leading from the pinion shaft. back tosaid chamber.

20. A cuttingotl machine head comprising an annular hollow box, and ahollow rotary cutter disk drum mounted in and extending through said boxand provided with driving means arranged in said box, a cutter diskrcmovably tilting one end of the drum and spanning the same, a clampingring fitting the vertitail outer face of said disk and provided with asurrtnmding annular radially projecting liquid slinging edge, and meansfor removably securing the ring and disk to the drum end.

21. A cutting-oft machine head comprising an annular box, and a hollowrotary cutter disk drum mounted therein and formed with an exteriorannular radially extending portion at its outer periphery having spurgear teeth to mesh with drum rotating means, said drum and box pro videdwith drum centering and radial thrust sustaining annular side bearingsurfaces and a bearing ring adjustable within the box in a directionparallel to the axis of rotation of the drum.

22. A cutting off machine head comprising an annular hollow box, ahollow rotary cutter disk drum mounted therein, said drum provided withan exterior driving gear integral therewith and inclosed within the boxand having side bearing faces engaging corresponding surfaces within thebox, one of said bearing faces being conical.

23. A cutting off machine head comprising an annular case, and a rotarysaw-blade drum supported therein and provided with a radially projectingmember inclosed and &

rotating within said case, side faces of said case and member providingdrum centering and radial thrust receiving bearings of greater diameterthan the drum.

24;. A cutting off machine head comprising a hollow box, and a hollowrotary cutter disk drum rotating therein and extend ing therethrough andprovided with and spanned by a cutter disk having a central workreceiving opening, said box and drum providing main bearings within thebox for said drum and comprising an annular bearing adjusting memberadjustable longitudinally of the axis of rotation of the drum, said mainbearings comprising a conical side-surface rotating with the drum and acorresponding conical side-surface of the box.

25. A cutting-off machine head comprising an annular case, and a rotarysaw-blade drum supported therein and provided with a radially projectingmember inclosed and rotating within said case, side faces of said caseand member providing drum centering and radial thrust receiving bearingsof greater diameter than the drum, one of said side faces of the casebeing adjustable longitudinally of the axis of rotation of the drum.

26. A cutting off machine head comprising a box consisting of annularend sections, and a rotary hollow cutter-disk carrying drum extendingthrough and rotating in and carried by said sections and provided withan exterior driving gear arranged between said sections.

27. A cutting-oft machine head comprisan annular case and a rotary drumextending therethrough and mounted therein and having a central openingand provided with a saw blade spanning said opening and having acentral-work receiving opening, said drum being provided with exteriordriving means inclosed within said case,

said case and drum providing opposite side main'bearings for the drum,one of said bearings comprising an annular \!-groove and a correspondingannular V-rib fitting in said groove.

28. A cutting-off machine head comprising an annular case, and a rotaryhollow saw-blade druinmounted in said case and having an exterior drumdriving gear, opposite side faces of the drum and case providing radialand longitudinal thrust sustaining main bearings for said drumcomprising means adjustable longitudinally of the axis of rotation toadjust said bearings and an annular V-groove in one of said side facesand a corresponding annular V-rib on an opposing side face and fittingin said groove.

29. A cutting off machine head compris- 30. A cutting off machine headcompris- 1ng a case, and a hollow rotary saw-blade drum mounted thereinand having an exte 'ior driving gear inclosed within the case, said drumand casing providing main longitudinal and radial thrust-sustainingbearings for the drum comprising an annular groove and an opposingcorresponding annular ll-rib fitting therein.

In testimony whereof I aflix my signature 1 in presence of twowitnesses.

' GEORGE GORTON. Witnesses C. ELLANnsoN, EARL S. Gnnn.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

